rust/src/libstd/io/buffered.rs, branch 1.34.0

Auto merge of #58357 - sfackler:vectored-io, r=alexcrichton

2019-02-26T02:48:13+00:00

Add vectored read and write support This functionality has lived for a while in the tokio ecosystem, where it can improve performance by minimizing copies. r? @alexcrichton

Rollup merge of #58553 - scottmcm:more-ihle, r=Centril

2019-02-20T03:59:10+00:00

Use more impl header lifetime elision Inspired by seeing explicit lifetimes on these two: - https://doc.rust-lang.org/nightly/std/slice/struct.Iter.html#impl-FusedIterator - https://doc.rust-lang.org/nightly/std/primitive.u32.html#impl-Not And a follow-up to https://github.com/rust-lang/rust/pull/54687, that started using IHLE in libcore. Most of the changes in here fall into two big categories: - Removing lifetimes from common traits that can essentially never user a lifetime from an input (particularly `Drop`, `Debug`, and `Clone`) - Forwarding impls that are only possible because the lifetime doesn't matter (like `impl Read for &mut R`) I omitted things that seemed like they could be more controversial, like the handful of iterators that have a `Item: 'static` despite the iterator having a lifetime or the `PartialEq` implementations [where the flipped one cannot elide the lifetime](https://internals.rust-lang.org/t/impl-type-parameter-aliases/9403/2?u=scottmcm). I also removed two lifetimes that turned out to be completely unused; see https://github.com/rust-lang/rust/issues/41960#issuecomment-464557423

Use more impl header lifetime elision

2019-02-18T03:42:36+00:00

There are two big categories of changes in here - Removing lifetimes from common traits that can essentially never user a lifetime from an input (particularly `Drop` & `Debug`) - Forwarding impls that are only possible because the lifetime doesn't matter (like `impl Read for &mut R`) I omitted things that seemed like they could be more controversial, like the handful of iterators that have a `Item: 'static` despite the iterator having a lifetime or the `PartialEq` implementations where the flipped one cannot elide the lifetime.

impl Deref/DerefMut for IoVec types

2019-02-14T03:40:17+00:00

Returning &'a mut [u8] was unsound, and we may as well just have them directly deref to their slices to make it easier to work with them.

Add vectored read and write support

2019-02-14T03:40:17+00:00

This functionality has lived for a while in the tokio ecosystem, where it can improve performance by minimizing copies.

tests: doc comments

2019-02-10T23:42:32+00:00

Remove licenses

2018-12-26T04:08:33+00:00

deny intra-doc link resolution failures in libstd

2018-12-18T02:10:24+00:00

Replace usages of `..i + 1` ranges with `..=i`.

2018-12-04T20:05:19+00:00

Fix compile errors in test

2018-11-02T17:39:56+00:00